/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --deep-space: #0A0E17;
      --cyan-electric: #00F0FF;
      --rose-combat: #FF3366;
      --surface-card: #141B24;
      --text-primary: #FFFFFF;
      --text-body: #B0C4DE;
      --text-muted: #6A7A8E;
      --border-glow: rgba(0, 240, 255, 0.25);
      --card-radius: 8px;
      --shadow-glow: 0 20px 40px rgba(0, 240, 255, 0.15);
      --transition-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      font-family: 'Inter', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
      background-color: var(--deep-space);
      color: var(--text-body);
      line-height: 1.6;
      margin: 0;
      -webkit-font-smoothing: antialiased;
    }
    
    /* 自定义斜切裁剪装饰 */
    .clip-angle-tl {
      clip-path: polygon(12px 0, 100% 0, 100% 100%, 0 100%, 0 12px);
    }
    .clip-angle-br {
      clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
    }
    
    /* 电光青发光边框 */
    .glow-border {
      border: 1px solid var(--border-glow);
      transition: border-color 0.3s, box-shadow 0.3s;
    }
    .glow-border:hover {
      border-color: var(--cyan-electric);
      box-shadow: var(--shadow-glow);
      transform: translateY(-4px);
    }
    
    /* 自定义按钮效果 */
    .btn-primary {
      background-color: var(--cyan-electric);
      color: var(--deep-space);
      font-weight: 700;
      padding: 0.75rem 2rem;
      border-radius: 40px;
      letter-spacing: 0.5px;
      box-shadow: 0 4px 15px rgba(0, 240, 255, 0.3);
      transition: all 0.3s var(--transition-bounce);
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-primary:hover {
      background-color: #33F5FF;
      box-shadow: 0 6px 25px rgba(0, 240, 255, 0.5);
      transform: scale(1.03);
      color: #05080D;
    }
    
    .btn-outline {
      border: 1.5px solid var(--cyan-electric);
      color: var(--cyan-electric);
      font-weight: 600;
      padding: 0.75rem 2rem;
      border-radius: 40px;
      background: transparent;
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-outline:hover {
      background-color: rgba(0, 240, 255, 0.08);
      box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
      transform: translateY(-2px);
    }
    
    /* 频道导航激活样式 */
    .channel-link {
      position: relative;
      padding: 0.5rem 1.2rem;
      font-weight: 500;
      color: var(--text-body);
      transition: color 0.3s;
      white-space: nowrap;
    }
    .channel-link::after {
      content: '';
      position: absolute;
      bottom: -8px;
      left: 50%;
      transform: translateX(-50%);
      width: 0%;
      height: 3px;
      background-color: var(--cyan-electric);
      transition: width 0.3s ease;
      box-shadow: 0 0 12px var(--cyan-electric);
    }
    .channel-link:hover {
      color: #FFFFFF;
    }
    .channel-link.active {
      color: var(--cyan-electric);
      font-weight: 700;
    }
    .channel-link.active::after {
      width: 70%;
    }
    
    /* 手风琴FAQ */
    .faq-item {
      background-color: var(--surface-card);
      border-radius: var(--card-radius);
      padding: 1.5rem;
      margin-bottom: 1rem;
      border-left: 4px solid transparent;
      transition: all 0.3s ease;
      cursor: pointer;
    }
    .faq-item.active {
      border-left-color: var(--cyan-electric);
      background-color: #1A2330;
      box-shadow: 0 8px 25px rgba(0, 240, 255, 0.1);
    }
    .faq-question {
      font-weight: 700;
      color: #FFFFFF;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-answer {
      color: var(--text-body);
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, margin-top 0.3s;
      margin-top: 0;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      margin-top: 1rem;
    }
    
    /* 数字动态效果 */
    .stat-number {
      font-variant-numeric: tabular-nums;
      font-feature-settings: "tnum";
    }
    
    /* 移动端汉堡菜单 */
    .mobile-menu {
      transition: transform 0.4s ease, opacity 0.4s ease;
      transform: translateY(-10px);
      opacity: 0;
      pointer-events: none;
    }
    .mobile-menu.open {
      transform: translateY(0);
      opacity: 1;
      pointer-events: auto;
    }
    
    @media (max-width: 768px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .channel-row {
        display: none;
      }
    }